Aliens May be Breathing Hydrogen

Aliens May be Breathing Hydrogen

sciencealert.com

Humans never give up exploring planets where life is possible. These planets are mainly looking for oxygen, which is considered the most important gas in terms of the existence of life. A study was published in the journal Nature Astronomy, in which the authors suggest looking for a hydrogen-based atmosphere, because hydrogen can also be a gas suitable for life. Therefore, we should look for planets on which there is hydrogen. So far, the interest of scientists has focused mainly on similar planets as ours. That means they were looking for copies of our planet.

It is clear that hydrogen and oxygen will not be present together in the atmosphere because they together form a flammable mixture. But what if there is only hydrogen in the atmosphere? It has been shown in the laboratory that some bacteria can live and multiply in a hydrogen-based atmosphere without any presence of oxygen. Organisms that live in these environments leave a clear mark in the form of other gases. Scientists are trying to point out that we cannot assume that other organisms function on the basis of oxygen, but it is possible that they only need hydrogen for their lives. This means that giant planets with hydrogen atmospheres can also be inhabited by organisms, which also leave clear chemical traces. Telescopes are able to capture these tracks, which can be very useful in the search for life.

On the other hand, if scientists focus on searching for planets with the presence of hydrogen, the number of searched planets will at least double. Therefore, the search would be financially, but also time consuming. Even if scientists discover traces of gaseous traces, there can be no certainty that they are the work of some organisms. The hypothesis is interesting, but it is uncertain whether scientists will be interested in this issue.


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